2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/224225Exact consistent gravitational anomalies for chiral bosons in two dimensions are treated both with the Schwinger-DeWitt regularization and independently through a cohomological procedure. The diffeomorphism transformations are described by a single ghost which allows to climb the cohomological chain in a unique way.20 pages, 3 figures; v3: reference addedHigh Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext